Road salt is not just an eastern thing. In BC they pre-treat roads prior to snow falls or freezing rain. The back of my Burb is covered in what looks like crystallized salt. It will not dissolve in fresh water and a jet at the car wash will not take it off. I spent the morning trying to wash it off with hot water and a few cleaners. No luck. I think they have experimented with different brines and I might have had the bad luck of getting a bad one on my vehicle. Anyone have the same experience?